San Bernard Reservoir No 3 Levee Reservoir Report

Last Updated: December 5, 2025

San Bernard Reservoir No 3 Levee in Brazoria, Texas, is a privately owned structure designed by Phillips Petroleum and completed in 1980.


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Summary

This Earth-type levee stands at a height of 15 feet and stretches for 14,990 feet, providing storage for up to 3,900 acre-feet of water. The reservoir primarily serves purposes other than flood control, with a normal storage capacity of 3,388 acre-feet and a surface area of 307 acres.

Managed by the Texas Commission on Environmental Quality (TCEQ), this levee has been assessed to be in fair condition as of April 2021, with a high risk rating. Despite lacking a spillway, the structure does not pose a significant hazard potential. The last inspection was conducted in February 2015, with a recommended inspection frequency of 5 years. While the dam is not under the jurisdiction of federal agencies, it remains a crucial component of the local water resource infrastructure, contributing to the management of the San Bernard River's flow.

Year Completed

1980

Dam Length

14990

Dam Height

15

River Or Stream

OFF CH-SAN BERNARD RIVER

Primary Dam Type

Earth

Surface Area

307

Hydraulic Height

15

Nid Storage

3900

Structural Height

15

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

15
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.